I tentatively believe in a god. I was brought up in a fairly religious home. I think the world is compatible with reincarnation, karma, all that stuff.

Think on a 50-year scale, which is a much more natural time-scale for global warming. The US is right now spending about 200 million dollars annually on research into renewable energy.

So it's mainly a question of helping the Third World overcome the effects of global warming.

I'm an old member of Greenpeace. I worried intensely, as I think most of my friends did, that the world was coming apart.

Money spent on carbon cuts is money we can't use for effective investments in food aid, micronutrients, HIV/AIDS prevention, health and education infrastructure, and clean water and sanitation.

I'm a vegetarian, but I don't expect other people not to eat meat.

On average, global warming is not going to harm the developing world.